S
M
T
W
T
F
S
26
67°
32°
27
74°
34°
28
75°
44°
29
66°
52°
30
53°
42°
1
55°
37°
2
49°
40°
3
56°
38°
4
69°
45°
5
73°
47°
6
47°
42°
7
55°
42°
8
56°
39°
9
69°
35°
10
60°
46°
11
55°
40°
12
57°
38°
13
50°
48°
14
59°
51°
15
69°
52°
16
72°
57°
17
70°
48°
18
72°
62°
19
84°
62°
20
71°
44°
21
64°
47°
22
64°
49°
23
65°
49°
24
65°
51°
25
66°
52°
26
67°
49°
27
65°
47°
28
63°
50°
29
64°
54°
30
64°
54°
31
68°
53°
1
64°
51°
2
63°
50°
3
64°
47°
4
65°
47°
5
66°
56°
6
69°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Coteau-du-Lac
Coteau-du-Lac's May 2026 forecast shows daily high temperatures ranging from 50° to 84°, with overnight lows between 44° and 62°. The average high for May is 66° with an average low of 51°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Coteau-du-Lac. See also: June | July | August.